// alert("测试")
const bgc = document.querySelectorAll('.content>.function>.message>.pic>div>div')
let bgcx = 0
let bgcy = 0
for (let coo = 0; coo < bgc.length; coo++) {
  console.log(bgc[coo].style.backgroundPosition);
  // x50 y47
  if (coo % 4 === 0 && coo !== 0) {
    bgcy -= 47
    bgcx = 0
  }
  bgc[coo].style.backgroundPosition = `${bgcx}px ${bgcy}px`
  bgcx -= 50

}

